DYNAMICS OF THE ALPDMN ICOSAHEDRAL PHASE

Authors
BOUDARD M DEBOISSIEU M GOLDMAN AI HENNION B BELLISSENT R QUILICHINI M CURRAT R JANOT C
Citation
M. Boudard et al., DYNAMICS OF THE ALPDMN ICOSAHEDRAL PHASE, Physica scripta. T, T57, 1995, pp. 84-87
Citations number
48
Categorie Soggetti
Physics
Journal title
Physica scripta. T → ACNP
ISSN journal
02811847
Volume
T57
Year of publication
1995
Pages
84 - 87
Database
ISI
SICI code
0281-1847(1995)T57:<84:DOTAIP>2.0.ZU;2-Z
Abstract
Dynamics of the icosahedral phase AlPdMn has been investigated with a centimetre size single grain and using inelastic neutron scattering me asurements. Well defined acoustic modes have been observed close to st rong Bragg reflections. Phonons broaden significantly as wavevectors e xceed 0.35 Angstrom(-1). Broad (1 THz) dispersionles excitations also show up with energies close to 1.8, 3.4 and 5.8 THz some of them being associated to crossing with quasi-Brillouin zone boundaries.